feat(首页): 为推荐模板添加删除功能

- 在模板卡片右上角添加删除按钮（悬停时显示）
- 点击删除按钮弹出确认对话框
- 删除后自动从推荐列表移除并更新统计数据
- 修复评分显示保留一位小数

frontend/vue-demo/src/views/Home.vue

@@ -85,12 +85,20 @@
       <el-row :gutter="16">
         <el-col :span="8" v-for="tpl in recommendTemplates" :key="tpl.id">
           <div class="tpl-card card" @click="useTemplate(tpl)">
+            <el-button 
+              class="tpl-delete-btn" 
+              type="danger" 
+              :icon="Delete" 
+              circle 
+              size="small"
+              @click.stop="handleDeleteTemplate(tpl)"
+            />
             <div class="tpl-preview">{{ tpl.icon }}</div>
             <div class="tpl-info">
               <div class="tpl-name">{{ tpl.name }}</div>
               <div class="tpl-meta">
                 <span>📊 {{ tpl.useCount }}次</span>
-                <span>⭐ {{ tpl.rating }}</span>
+                <span>⭐ {{ tpl.rating.toFixed(1) }}</span>
               </div>
               <div class="tpl-tags">
                 <span class="tpl-tag" v-if="tpl.isOfficial">官方</span>
@@ -206,8 +214,8 @@
 <script setup>
 import { ref, reactive, computed, onMounted } from 'vue'
 import { useRouter } from 'vue-router'
-import { Promotion, UploadFilled, CircleCheckFilled } from '@element-plus/icons-vue'
-import { ElMessage } from 'element-plus'
+import { Promotion, UploadFilled, CircleCheckFilled, Delete } from '@element-plus/icons-vue'
+import { ElMessage, ElMessageBox } from 'element-plus'
 import { useTemplateStore } from '@/stores/template'
 import { useTaskCenterStore } from '@/stores/taskCenter'
 import { templateApi, parseApi } from '@/api'
@@ -303,6 +311,33 @@ function useTemplate(tpl) {
   router.push(`/editor/${tpl.id}`)
 }
 
+async function handleDeleteTemplate(tpl) {
+  try {
+    await ElMessageBox.confirm(
+      `确定要删除模板「${tpl.name}」吗？此操作不可恢复。`,
+      '删除确认',
+      {
+        type: 'warning',
+        confirmButtonText: '删除',
+        cancelButtonText: '取消',
+        confirmButtonClass: 'el-button--danger'
+      }
+    )
+    
+    await templateStore.deleteTemplate(tpl.id)
+    // 从推荐列表中移除
+    recommendTemplates.value = recommendTemplates.value.filter(t => t.id !== tpl.id)
+    // 更新统计
+    stats.templateCount = Math.max(0, stats.templateCount - 1)
+    ElMessage.success('删除成功')
+  } catch (error) {
+    if (error !== 'cancel') {
+      console.error('删除模板失败:', error)
+      ElMessage.error('删除失败')
+    }
+  }
+}
+
 async function handleCreateTemplate() {
   if (!newTemplate.name) {
     ElMessage.warning('请输入模板名称')
@@ -526,6 +561,23 @@ async function handleUploadTemplate() {
   width: 100%;
 }
 
+.tpl-card {
+  position: relative;
+  
+  .tpl-delete-btn {
+    position: absolute;
+    top: 8px;
+    right: 8px;
+    opacity: 0;
+    transition: opacity 0.2s;
+    z-index: 10;
+  }
+  
+  &:hover .tpl-delete-btn {
+    opacity: 1;
+  }
+}
+
 .quick-actions {
   .quick-action {
     display: flex;